PowerPoint Presentation:

PowerPoint Presentation:

Hierarchy of digital modulation technique. The digital modulation technique classified in two category. Coherent technique Noncoherent technique Coherent technique -> In coherent technique we have to use a phase synchronize carrier to be generated at the receiver to recover the information signal. Coherent technique are complex but yield better performance. Non-Coherent technique -> In this technique no phase synchronize carrier is needed at the receiver. It is less complex